Pole mounting



B. SPRING POLE MOUNTING Filed March 19, 1931 lnv enToT.

George BSpTing WW wm. A I a Patented Nov. 6, 1934 OFFICE -POLE MOUNTINGGeorge BxS'pring, Newtonville, Mass., assignor to The Easter-n MalleableIron Gompany, New Britain,-=Gonn., a corporation of ConnecticutApplication March 19,

1 Claim.

This invention relates to pole :mountings for poles carryingtransmission lines such for instance .as telephone poles, telegraphpoles, electric light poles, etc. a

5 One of thebbjectsof the invention is to provide-animproved polemounting which is relatively inexpensive to manufacture and which canvbeeasily set in the ground and on which the polemay be firmly supportedwith the lower end of the pole above the surface of the earth.

Another object of the invention is toprovide a pole mounting for thispurpose which can be readily made at the factory :and :transportedcompletely 'made .to the point where it is to be used. Oneadvantageresulting from this is that the improved pole mounting can be installedsimply by means of the ordinary. tools used in setting a pole. I

Another objectof "the invention is to provide a pole mounting of thischaracter whichcan be readilynsetinithe earth 'adjacent a-xpole which isin use for supporting "transmission :lines and to which suchpole can bereadily transferred-while in erected position.

Other objects of the invention areto provide improvements in polemountings .all as willbe more fully hereinafter set forth.

In'the drawing:

Fig. l-is a viewillustrating a i-poleymounting embodying my invention;

Fig. 2 is a similar view illustrating a slightly different way in whichthe invention. may be applied; 1 I i i Fig.3 is a View of one of thesupporting mem bers with the foot portion-brokenout -leaving the postand reinforcement in elevation;

Fig. 4 isasection onthe,line14--4,Fig. 1;

Fig. is a sectionon the line :5--5, Fig. 3.

In the drawing, 1' indicates thecpole which is supported on my improvedpoleimounting. The pole mounting comprises one or more pole-supportingelements adapted to be set into the ground and on which the pole issupported and to which the pole is firmly clamped.

Each pole-supporting member comprises a foot portion 2, preferably ofconcrete, which is relatively long compared to its cross-sectional areaand which preferably has a cross-sectional area somewhat less than thecross-sectional area of the pole 1. In practical use I propose to makethese foot portions about five feet long. Each supporting member alsocomprises a post element 3 of metal which has its lower end 4 embeddedin the concrete 2 for a considerable distance and the upper end 5 ofwhich rises from 1931, Serial No. 523,786

the upper faceG ofpthe foot member for a suitable distance.-

Theinner face 7 of the .:post 3 is preferably curved to fit the exteriorof thezpole andsaid posts are shown as having a general Tshape-in crosssectionand provided witha strengthening rib ,8 which extendslongitudinally thereof on the back face.

.In making the supporting member the metal post 3 may be placed in asuitable mold with the upper end projecting and then the mold mayrbe-filled with concrete to producethe foot portion.2 and when theconcrete has set the sup- .portingmember is complete, ready forinstallation.

if desired, the concrete foot-portions may be t-reinforced with metal.One way of doing this 515130" provide reinforcing rods20 which extendlongitudinally of thefoot portion. In the construction shown there arethree such rods, one on either side of the web 8 of the post 3 and theother on the side of the post facing the pole, but the number ofreinforcing rodswhich may be used may be varied without'departing from'the invention. Ihave alsoshown a'fur- 'ther reinforcement in the formof acoarse wire mesh 21 which is wrapped around the post 3 and whichprovides transverse as-well as longitudinal reinforcement.

The upper, face 6 of each foot is somewhat larger than thecross-sectional dimension of the :post 3 and in the completed supporting'member the portion 9 of the upper face 60f the foot forms a stepor seaton which the pole 1 may rest. The portion of the web or fin '8 whichprojects above the foot 2 is provided with a plurality of apertures10adapted to receive clamping members by which the pole'may be clampedto the face 7.

I For supporting a relatively small pole a single supporting member maybe suificient as shown inlEig. 2. In .installing the supporting memberthe concrete foot portion 2 is set into the earth I at the desired pointwith the upper surface 6 thereof projecting somewhat above the topsurface 12 of the earth. The pole l is then placed in position with thelower end resting on the seat portion 9 and the pole is then clamped tothe face 7 by suitable clamping devices 11 which may be of the typeillustrated in my patents No. 1,679,747, August 7, 1928, No. 1,755,461,April 22, 1930 and No. 1,789,393, January 20, 1931. With thisconstruction the bottom face 13 of the pole is spaced above the surfaceof the earth and is, therefore, not subjected to the decaying actionwhich is the result of the pole being in contact with the earth.

This mounting can be constructed complete at the factory and transportedin its complete form to the place where it is to be installed and it maybe as readily set into the earth as an ordinary pole so that no specialtools are needed for installing the mounting other than such as arecommonly used in setting a pole.

After the mounting has been set the pole can be easily attached theretoby placing the lower end 13 of the pole on the seat 9 and then applyingthe clamping members 11 which securely clamp the pole to the posts. Theposts should have a sufficient overlappingengagement with the pole tohold the pole firmly. I

For mounting large poles I propose to use two of these supportingmembers as shown in Fig. 1. Each supporting member may be independentlyset in the earth and arranged so that the lower end of the pole may beplaced between them, the pole being supported partially on the seatportion 9 of one supporting member and partially on the seat portion 9of the other supporting member. I

After the polehas been put in position the two supporting members areclamped firmly to the pole by means of clamping elements 15 which areconnected to the ribs 8 of the posts and which engage the side faces ofthe pole exposed between the posts.

In making the foot portions 2 I preferably will so form them that theinner faces 16 thereof are somewhat pointed in a transverse direction.When the two supporting portions are employed the two pointed ortaperedsides 16 face each other as seen in Fig. 4. An advantage of thisconstruction is that the pointed shapes of the foot portions facilitatetheir being drawn together slightly in order to enable the upper ends ofthe posts to be firmly clamped to the pole.

' In installing the pole mounting shown in Fig. 1 the two supportingmembers will be set in the earth at approximately the correct distanceapart to accommodate-the pole which is to be set, this distance varyingwith the size of the pole. After the pole is placed in position with thelower face 13 thereof resting on the two seat portions 9 it may be foundthat the upper ends 5 of the posts 3 do not fit tightly against thepole. When the clamps 15 are applied the upper ends of the posts will bedrawn tightly against the pole and the pointed shape of the faces 16facilitates any slight movement of the foot portions 2 toward each othernecessary to permit the posts to be firmly clamped to the pole. Thesetapered or pointed surfaces 16 tend to crowd the earth away so as toallow this necessary movement.

My improved pole mounting may be used for the mounting, of new poles ormay be used as a support for a pole which has been in use and which hasbecome more or less decayed at the surface of the earth. In the lattercase the decayed pole will be cut off close to the earth while still inits erected position and the lower end of the pole may then be setslightly to one side. The two supporting portions may then be set in theearth at approximately the proper distance apart to accommodate the poleand with the upper surfaces 6 of the foot portions extending a shortdistance above the surface of the earth. After the two supportingportions have been set the pole may be placed between the upper ends ofthe posts 5 with the lower end resting on the seats-9 and the clamps 15applied to clamp the pole firmly in place.

These operations can be carried out without disturbing any of the wirescarried by the pole.

If desired, the seats 9 may be formed with drain grooves 17 which allowthe water to readily drain 01f from the seats thus preventing theaccumulation of water at this point which might have a tendency tocausedecay. It will be noted that the foot portion has a largercross-sectional area at the upper end than at the lower end. Theadvantage of this is that the larger upper end gives an increased earthresistance at the surface of the earth where this is most needed. At thelower end of the foot some distance below the surface of the earth theearth will present a greater resistance than at the surface of theearthwhere it is more easily crowded to one side and. by making theupper end of the foot portion larger an increased earth resistance isprovided at the surface of the earth where such increase is most neededto prevent the pole from swaying.

I claim:

' A pole mounting comprising two pole-supporting members each having afoot portion of concrete adapted to set into the earth with the upperend of the foot portion projecting slightly said faces filled withearth, and also being pointedto facilitate the drawing of the footportions together in the earth as the posts are clampedto the pole saidfoot portion having a progressively-increasing cross-sectional area fromthe bottom to the top whereby the larger end presents an increasedsurface for earth resistance.

GEORGE B. SPRING.

